Robert dinsmore



(No Model.)

R. DNSMORE. PIPE AND SHAFT GOUPL'ING.

No. 462,894. Patented Nov. 10, 1891.

rares PATENT OFFICE- ROBERI DINSMORE, OF lVES'lON, VEST VIRGINIA, ASSIGNOR OF ONEHALF TO ADOLF GREENSTEIN, OE SAME PLACE.

PIPE AND SHAFT COUPLING.

SPECIFICATION forming part of Letters Patent No. 462,894, dated November 10, 1891.

Application led April 22,1891. Serial No. 389,949. (No model.)

To @ZZ whom it may concern: recess l2, in whichis seated the annular flange Be it known that I, ROBERT DINSMORE, a 9 of the sleeve 8. The disk 10 is provided at citizen of the United States, residing at Wesintervals with key-hole slots 13, the large porton, in the county of Lewis and State of Vest tions of which are adapted to receive the heads 55 5 Virginia, have invented a new and useful of the pins or studs (5, and said studs are Pipe and Shaft Coupling, of which the followsomewhat shorter than the slots, so that they ing is a specification. do not extend completely through the same This invention relates to improvements in when entered therein. Each of the key-hole pipe and shaft couplings, the objects in view slots is curved concentric with the pipe-sec- 6o ro being to provide a simple, cheap, and contions, andis provided withapair of upwardlyvenient means of coupling the sections of inclined internal flanges 14, leading from the shafts or pipesin such manner as to form tight larger ends of the slots to the narrow ends joints, readily assembled and disassembled, thereof.

and this without the necessity of direct hand- In formingthe joint the inner end of the sec- 65 I5 ling of the joints during the formation bythe tion l is inserted into the sleeve 8 until it operators. abuts against the end of the section 7, the in- Other objects and advantages of the inventervening space between the sectionsthereforc tion will appear in the following description, being covered by the sleeve. The pins or and the novel features thereof Will be particustuds entering the key-hole slots may be made 7o 2o larly pointed out in the claim. to bind the two coupling-disks together by Referring to the drawings,Figurel isa persimply partially rotating one of said disks, spective of a joint formed bya pipe-coupling and thereby forcing the heads of the studs to constructed in accordancewith myinvention. ride up thc inclined ways or flanges of the Fig. 2 is avertical longitudinal section. Figs. key-hole slots and thus form a tight joint. 75

4a5 3 and 4: are details of the respective members In lowering one section upon another, as of the joint. Fig. 5 is an enlarged section to when in the act of forming well-tubing,it will show how the heads of the studs fit on the be obvious that the section 7 may by suitable ways provided within the slots of the other ropes or chains be loweredupon the section l,

section. and after the end ofthe section l has been en- So 3o Like numerals of reference indicate like tered in theinner end of the sleeve 8 it willbc parts in all the figures of the drawings. apparent to the operator that the sections are l designates a pipe-section, the front end in alignment, and it is simply necessary in of which is slightly reduced and in rear of its order to effect a coupling and form a joint to reduced portion provided with a short section rotate the upper section until the disk l() en- S5 35 2 of screw-threads, upon which is threaded gages with the pins or studs, and then by the hub 3 of a coupling-disk et, which disk partially rotating the disk l() the coupling is has its face located in rear of the end of the effected. It will be obvious thatin suchlowersection l, as shown. A leatherorother packing and assembling of the parts the danger of ing-washer 5 encircles the section l in front misplacing the washer is avoided,in that the 9o 4o of the disk at, and is surrounded by a series latter is held to its place by reason of the inof square-headed pins G, projecting from the ner end of the sections being extended beyond face of the disk 4. the washer. ,This may constitute the entire 7 designates the companion pipe section, coupling; but I prefer to employ alocking deand the same is threaded at its inner end, as vice; whereby a separation of the coupling 95 45 shown, and receives the rear end of a sleeve becomesimpossible. This locking device con- 8, which latter at its innerend extends beyond sists of a wedge-shaped tapered locking-pin the inner end of the section 7 and terminates 15, which, after the coupling is in a locked poin an annular flange 9. sition, is driven through a convenient key-hole 10 designates a coupling disk, Vprovided slotIS and through an oblongslot lG,formedin loc 5o with a central opening 1l, so as to fit the sleeve the disk 4 at one side of 011e of the studs. A 8 and upon its front face with an annular retrogrademovementupon thcpartof either of the disks, and hence an unfastening of the tWo disks, is rendered impossible. However, by withdrawing the pin and employing a Wrench or other means, the disks may loe rotated so as to bring the heads of the studs to thelarge ends of the key-hole slots, and thus a separation may be effected.

It will be understood that this invention may loe advantageously employed in oouplin g shafts as Well as pipes.

Having described my invention, what I claim is- The combination, with the opposite pipe or shaft sections, of the disk 4, threaded on the same back of the end thereof and provided with threaded studs arranged in an annular series, at one side ot' one of which is formed the slot 16, the sleeve 8, having the flange 9 mounted upon the opposite pipe-section and and through the opening lo of the disk 4, substantially as specified.

In testimony that I claim the foregoing as lny own I have hereto affixed my signature in presence of two Witnesses.

ROBERT DINSMORE. \Vitnesses:

JAMES RALsToN, GEORGE C. COLE. 

